Rename MeshPlugin, SinglePortPlugin and ProtobufPlugin

src/modules/PositionModule.cpp

@@ -10,7 +10,7 @@
 PositionModule *positionModule;
 
 PositionModule::PositionModule()
-    : ProtobufPlugin("position", PortNum_POSITION_APP, Position_fields), concurrency::OSThread("PositionModule")
+    : ProtobufModule("position", PortNum_POSITION_APP, Position_fields), concurrency::OSThread("PositionModule")
 {
     isPromiscuous = true;          // We always want to update our nodedb, even if we are sniffing on others
     setIntervalFromNow(60 * 1000); // Send our initial position 60 seconds after we start (to give GPS time to setup)